Grounding Bushing, Type Threadless, Set Screw, Trade Size 3-1/2 Inch, Wire Size 6 AWG Standard to 250 KCMIL Standard, Lug Type Lay-In, Aluminum, Conductor Material Copper/Aluminum, Throat Type Insulated, Diameter 4.5 Inch, Height 1 Inch, Material Zinc Plated Malleable Iron Body, Zinc Plated Steel Clamping Screw/Set Screw, Approval UL 467, CSA C22.2, Used On Threadless Rigid Metal Conduit/IMC, Used with a Locknut to Terminate Conduit at an Enclosure, Lug Used to Connect Bonding Jumper to a Neutral Bus Bar